There is a deep misunderstanding here of US politics and foreign policy.
The US might act in various ways to protect American manufacturers, or oil industry, or other industries that are responsible for a lot of jobs in the US or are a strategic resource in some other way. See the 100% tax import for Chinese EVs. The US government doesn't care about Apple. Apple's economic impact is basically irrelevant for the US, because it doesn't provide a noteworthy number of jobs or any significant supply chain within the US. Apple's use as a strategic resource is completely irrelevant based on their antagonistic behavior towards the US government and they've shown themselves to be as eager to comply with Chinese laws as they are to flout US government policies.
I'd maybe see the US do something to protect Microsoft, with its deep ties to the military industrial complex, or Intel, which has both these ties and is clearly a strategic resource because of the advanced chips it provides, but really only if there were an existential threat that would also prevent Microsoft or Intel from performing their necessary roles in the US economy, the military and in US foreign policy.
But to suggest that US guns are in any way relevant, or that the US would bother trying to protect Apple, is frankly absurd.
The EU has smacked down Meta, Google and Microsoft already for things they felt were anti-competitive. The US didn't give a shit. Why would it be any different here?